Mishnayos Kesuvos Perek 3 Mishnah 5

The mishna clarifies: How does the rapist drink from his vessel? Even if the woman he raped is lame, even if she is blind, and even if she is afflicted with boils, he is obligated to marry her and may not divorce her. However, if a matter of licentiousness is found in her, e.g., if she committed adultery, or if she is unfit to enter the Jewish people, e.g., if she is a mamzeret, he is not permitted to sustain her as his wife, as it is stated: “And to him she shall be as a wife” (Deuteronomy 22:29), from which it is inferred that she must be a woman who is legally suitable for him.

כֵּיצַד שׁוֹתֶה בַעֲצִיצוֹ, אֲפִלּוּ הִיא חִגֶּרֶת, אֲפִלּוּ הִיא סוּמָא, וַאֲפִלּוּ הָיְתָה מֻכַּת שְׁחִין. נִמְצָא בָהּ דְּבַר עֶרְוָה, אוֹ שֶׁאֵינָהּ רְאוּיָה לָבֹא בְיִשְׂרָאֵל, אֵינוֹ רַשַּׁאי לְקַיְּמָהּ, שֶׁנֶּאֱמַר, (דברים כב) וְלוֹ תִהְיֶה לְאִשָּׁה, אִשָּׁה הָרְאוּיָה לוֹ: